Question

A body mass 2 kg moving on a horizontal surface with an initial velocity of 4 m/s comes to rest after 2sec of One wants to keep the body moving on the same surface with a volunteer of 4m/s the force required os

Answer 1

Answer:

for rest a is.4m/s/2sec= -2m/s^2 acceleration

whereas to keep it moving v=4m/s

a2=v-u/t=4-0/2=2m/s^2

thus F=ma=4N